Air and fuel heater for internal-combustion engines



Dec. 1 1925- 1,563,608

J. N. WQOD AIR AND FUEL HEATER FOR INTERNAL COMBUSTION ENGINES FiledSept. 12, 1921 vFig. 1

INVENTOR' .729886: N VVood 14., an pipe 12 telescoping upon fla PatentedDec. 1, 1925 PATENT OFFICE.

JESSE N. WOOD, F VENICE, ILLINOIS.

AIR AND FUEL HEATER FOR INTERNAL-COMBUSTION ENGINES.

Application filed September 12, 1921. Serial No. 500,172.

T 0 all whom 2'1 may concern:

Be it knownthat I, J-Essn N. \Voon, a citizen of the United States,residing at the town of Venice, in the county of Madison and 'State ofIllinois, have invented certain new and useful Improvements in Air andFuel Heaters forInternal-Combustion Engines, of which the following is aspecification.

This invention-is a heater for the air and fuel used in all kinds ofinternal combustion engines, whether such fuel be a distillate, orasoline, or oil, or any other. The result of its use is great economy infuel, as evidenced by increased mileage per unit of fuel. One of itsadvantages is that it equalizes motor conditions of winter and summer. 7

In the accompanying drawings forming part of this specification, inwhich like numbers of reference denote like'parts wherever they occur- IFigure l is a longitudinalsectional view of the heater; I

Figure 2 is a sectional view on the line 2-2 in Figure 1; i I

Figure 3 is a rear-end elevation;

Figure 4 is a front-end elevation; and

Figure 5 isa diagrammatic side elevation of the device as applied to aninternal combustion engine.

The exhaust manifold 1 leads from the engine, and the exhaust pipe 3conducts the exhaust into the center chamber at of this device, pipe 3being threaded into the collar 5 forming part of plate 6, whichconstitutes the forward end of this device.

Plate 7 constitutes the rear end of this, device, the said two plates,6, and 7, being bolted together by a plurality of long bolts 8 and nuts9.

Three concentric pipes or drums 10, 11, and 12 are arranged betweenplates 6 and 7 Each is telescoped at its-ends upon collars or annularflanges formed integrally with or attached to plates 6 and 7, pipe 10telesco ing on flanges 13, pipe 11 on A plurality of holes 16(preferably four in number) permit the exit of the hot prod netsofcombustion from chamber 4 into chamber 17 formed in the space betweenipe lland pipe v12. The rear end of chamher 4 is closed by plate 7 as isalso the rear end of chamber 17 and chamber 18. The forward end of thesechambers is closedby into chamber 17 they heat, also, pipe 11 andthereby chamber- 18 and escape t rough exit 7 1 opening 19.

The fuel iscontained in 'tank 20 and is thence conducted by pipe 21through chainber 18, where it is enclosed withinpipe 22, 7 entering thesame through collar 23. Colg lar 23 is threadedupon one end of pipe 22.i In chamber 18 the fuel coming from tank 20 is heated, and afterleaving the same, pipe 21 continues on to carburetor 28 into 7 which theheated airenters at 27 and from tliecarburetor 28 the mixture of air andfuel enters the intake manifold .29.

' The air that enters carburetor 28 at. 2? comes through pipe 30 thatleads: from 3 chamber 18, in which the air that enters the main airinlet 31 is heated.

The heat of the products of combustion first admitted in the chamber 4,thence passing into chamber 17, and thus heating chainber 18 and itscontents, causes both the pipe 22. and the air to attain the sametemperature 2 in chamber 18. 4 v

In winter or in the presence of extreme cold arising from any cause, theair re-ao ceived through inlet- 31 may not be adequately heated, and insuch event additional and hotter air may be admitted to the intakemanifold by operating a valve 32 by the rod 33, mounted in the dashboard34,95 by means of the handle 35, whereupon the engine immediately beginsto draw the hotter air through pipe 36, which connects with the end ofcopper coil 37, spirally wound around pipe 12 and leading from theauxil- 'iary air inlet 38. By this means the mixture fed intov theintake manifold will be maintained at a temperature substantially thesame in winter as m summer. a Pi 37 is heated by the exhaust gas in 10ohm r 17 and by contact with the hot pipe 12, which is heated by theproducts of combustion in chamber 4. I v

' Pipe 21 is inclosed within ipe 22 in order that the gasoline or otherfudl through will not be vaporized at that point; Having thus describedthis invention, 1'

passing there- "0 hereby reserve the benefit, of all changes in form,arrangement, order, or use of parts,

as it is evident that many minor changes may be madetherein withoutdeparting from the spirit of this invention or the scope of thefollowing claims.

-I claim: a

1. A heater for the air and for the fuel supplied to an internalcombustion engine, comprising a plurality,' of concentric tubesconnected together at their ends by front and rear heads, the centraltube having openings at the forward end to form communication with thechamber surrounding said central tube. an exhaust pipe frohi an i ternalcombustion chamber communicata with the central tube adjacent theopenings therein. the rear head having an exhaust pipe whichcommunicates with the chamber adjacent and surrounding the central tube,an insulated liquid fuel supply said outermost c comprising a pluralityof concentric tubes connected together at their ends by front and rearheads, the central tube having openings at the forward end to form communication with the chamber surrounding said central tube, an air inletpipe communicating with the atmosphere and ex-' tending through the rearhead and coded around the central tube and extending through the fronthead to heat auxiliarf air supplied to the intakemanifold, an

exhaust pipe from an internal combustion e ine communicating with thecentral tubeafi ad acent the openings therein, the rear head havingan-exhaust pipe which communicates with the chamber surrounding thecentral tube, a heat insulating pipe extending.

through the frontand rear heads and the outermostchamber. a cap forclosing the rear end of the heat insulating pipe,- a liquid fuel supplypipe extending through the cap and the heat insulating pipe to supplyheated fuel to a carburetor, and a hot air outlet pipe communicatingwith the outermost chamber, the outer tube having an air inlet openingnear the rear and top portion for admitting air to be heated therein.

In testimony whereof I hereunto afiix my signature.

JESSE N. wool);

